A Replacement Etching Route to CuSe with a Hierarchical Hollow Structure for Enhanced Performance in Lithium Ion Batteries

作者：Zhou, Zaoyuan^*; Zhang, Weixin; Zhao, Wenran; Yang, Zeheng; Zeng, Chunyan

来源：Journal of Electronic Materials, 2014, 43(2): 359-368.

DOI：10.1007/s11664-013-2905-4

• Copper selenide
• hierarchical materials
• hollow structure
• lithium ion battery
• electrochemical property

CuSe with a hierarchical hollow structure formed from nanoplates has been successfully prepared by a replacement etching method with Cu(OH)(2) nanowire bundles as precursors. The large difference between the solubility products of Cu(OH)(2) and CuSe results in the formation of Cu(OH)(2) CuSe core shell structures as intermediates. The CuSe with a hierarchical hollow structure is obtained when the Cu(OH)(2) core is dissolved in ammonia solution. Use of the CuSe with a hierarchical hollow structure as electrode material for lithium ion batteries results in enhanced electrochemical properties, including initial coulombic efficiency and cycling performance, compared with use of CuSe nanoparticles. The relatively stable structure of CuSe with a hierarchical hollow structure is believed to be the main reason for the enhanced electrochemical performance.

• 出版日期2014-2
• 单位合肥工业大学